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Proceedings Paper

An improved PGC demodulation algorithm of interferometric sensor for eliminating the intensity disturbance
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Paper Abstract

A modified phase generated carrier (PGC) demodulation algorithm for interferometric sensor is presented in this letter. Compared with the differential-cross-multiplying measure (PGC-DCM algorithm), the effect of light intensity disturbance (LID) is eliminated. Additionally, the harmonic distortion of arctangent measure (PGC-arctan algorithm) is well suppressed. In the experiment, while the simulated LID frequency is settled to 50 Hz, the signal-to-noise of the improved PGC algorithm respectively receives an increase of 10.3 dB and 18.2 dB over PGC-DCM and PGC-Arctan algorithms. The system has a dynamic range of 45.9 dB at 600 Hz by employing the improved PGC demodulation algorithm.

Paper Details

Date Published: 24 July 2018
PDF: 6 pages
Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108273E (24 July 2018); doi: 10.1117/12.2327134
Show Author Affiliations
Xiudong Liang, Anhui Univ. (China)
Xinxin Li, Anhui Univ. (China)
Shenglai Zhen, Anhui Univ. (China)
Xuqiang Wu, Anhui Univ. (China)
Kai Qian, Hubei Univ. for Nationalities (China)
Benli Yu, Anhui Univ. (China)

Published in SPIE Proceedings Vol. 10827:
Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018)
Yingjie Yu; Chao Zuo; Kemao Qian, Editor(s)

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